What measures must be taken when the emergency power supply and the work power are in parallel operation?
When the emergency power supply and the work power are in parallel operation, we should pay attention to the following points:1, use relays and electronic switches. When the power supply is used, the emergency power supply is cut off, and the power supply is supplied by the work power supply.2. When the power failure occurs, the external circuit of the work power supply should be cut off when the emergency power supply is used, so as to avoid power supply to the external circuit.3, due to the general capacity of emergency power is small, the use of high-power electrical equipment should be cut off. Leave sufficient margin according to the load. Don't overload it.Mine is a spare power for home use. It is powered by an accumulator.
Emergency power supply should be paid attention to when using:1, emergency power supply and power supply must have reliable interlocking measures, mechanical interlocking is better than mechanical interlocking;2, in the down road, we should pay attention to the first stop power supply, evacuation emergency power supply (automatic input device except), not allowed to parallel down the road, but also not allowed to run side-by-side;3, when the emergency power supply is a small generator, it is necessary to set up the grounding grid separately. When the road is down, the main grounding network is put into a separate grounding grid;4, because the emergency power supply is smaller in general capacity, before the emergency power supply, the non important load should be removed to ensure the important load;5, operators should carry out technical training, operation has switching operation system, emergency power supply has procedures;
Note that the emergency power operation should be the important load off, maintenance and minimize its load to maintain the normal operation of the important load at the same time to strengthen the emergency power supply to assure the safety of equipment and wait for power recovery.
When the emergency power supply and the work power supply are in parallel operation, measures must be taken to prevent non simultaneous coordination.In the event of an accident, the emergency power supply should be automatically put into operation when the work power is gone. In the starting loop of the emergency power supply, a plurality of working power supplies are connected at the disconnection position, the contact point and the interlocking switch, and the voltage is detected to be put into the emergency power supply. In this way, the emergency power supply and the work power supply are prevented from being juxtaposed simultaneously, and the emergency power supply is prevented from being mistakenly started. Therefore, the emergency power supply normal maintenance test need to disconnect switch and power supply, and the car in the test position switch of emergency power supply (switch or pull the emergency power switch), regular testing so you can be assured of the emergency power supply.
The general emergency power supply does not work in parallel with the work power supply. Because the emergency power supply is mostly diesel generator, it should not run for a long time. For important loads, work power, backup power and security power supply (also called emergency power supply) should be set up. The standby power supply can be juxtaposed with the work power supply, but it also needs to be checked for the same period before it can be tied.
